Hi @paulette.macdonald ! I used to keep the harp in a corner because my kids were younger then and I thought it would be best for me to keep the harp away from them to avoid accidents. Three years later, I totally have the lever harp in a relatively open spot next to my pedal harp (which is placed closer to the wall). The kids are used to paying attention to the harps now that I feel safe enough to do that, although I still tuck it away to the corner where the lever harp used to stay when I have visitors over. If you have pets in the house, that could be another consideration. If you decided to put the harp in a corner, you may want to look out for other factors that would affect the harp such as windows (tends to have less even temperature) and heater / radiators.
With regards to the levers, I tend to leave them the way it is during the day and put them all down before I go to bed at night. I put the pedals on my pedal harp to “open strings” position (flat) as well at night. I was told that this will help reduce the tension on the strings which in turn would help reduce string breakage. That being said, the temperature and humidity in my home is relatively consistent throughout the year which also contribute towards strings not breaking as easily.
Hope that helps!